I put an WASP .28 in my warhead, but it was too powerfull, after tuning when I gave it WOT the spur gear would strip in place, I went through 3 spurs before I decided that I may not be meshing the gears right. So I took it to my LHS and they meshed the gears for me, and of course the same problem.


The point is, be carefull how much power you put in your warhead, the stock engine was very weak for it's size. so I'd imagine even getting a slightly smaller engine like a .26 will provide more power. All I can say is, ever sience I traded my warhead off, My life has been happier.